Press.



E. G. JOHANSON.

PRESS.

APPLICATION FILED Dec. 6. 191-7.

1,269,186, Patented June 11, 1918.

HEET 2- To all whom it may concern."

Be it known that I, EMIL G. JoneNsoN, subject of the King of Sweden, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Presses, of which the following is a full, clear, concise, and exact description.

My invention relates to presses and 1s of particular service in connection w th those presses which are employed in molding plastic aterial such as molten glass, though the invention is not to be limited to any particular use to which it may be put.

It is one of-the objects of my inventlon to provide means whereby a single press may employ a plurality of formmg plungers to which power may be suitably applled to enable the plungers to perform their function.

It is another object of my invention to employ means whereby the work may be automatically fed to the plungers in order to dispense with the manual feeding ad]ustment hitherto effected by operators.

I will explain my invention more fully by reference to the accompanying drawings showing the preferred embodiment thereof and in which Figure 1 is a view in end elevation, partially in section, of a press gonstructed in accordance with my invention; Fig. 2 is a view on line 2-2 of Fig. 1; Fig. 3 is a view on line 3-3 of Fig. 1; Fig. 4 is a view of a molding box, with the top and bottom thereof in separated relation, that may be employed in forming glass headlights; and Fig. 5 illustrates some of the mechanism whereby the molding box may be fed step by step to plungers of the press.

Like parts are indicated by similar characters of reference throughout the diflerent figures.

The press illustrated includes the press base 1 which supports an overhangin upri ht extension 2. A vertical cylm rical tuhular guide 3 depends from the extension 2 and overlies the central portion of the base 1. The plunger head 4 is provided with an upwardly extending vertically semi-tubular projection 5 that is movable up and down in the tubular guide 3. The plunger head 4 is also provided with an upwardly extending vertical semi-tubular pro'ection5 'that is also movable u and down in the uide 3, the heads 4, 4 eing movable refittiveli. The plunger heads 4, 4 carry two depen specification of Letters Patent.

Application filed December 6, 1917. Serial No. 205,802.

Patented June 11,1948.

ing plungers 6, 7. A lever 8 is connected at one end to the plunger head 4 near the plunger 6. A lever 9 is connected to the other plunger 7 by being pivotally connected at one end to the plunger-head 4 near the plunger 7.- A connecting member 10, which is preferably of U-shape, connects the other ends of the levers 8 and 9, the sides of the U-shaped member 10 being upright and freely passing through openings in the plunger heads 4, 4 whereby the member 10 is movable with respect to the plunger heads 4, 4 The member 10 is provided with an upwardly extending vertical stem 11 that works within the bore formed by the two semi-tubular projections 5, 5 that ide said stem in vertical movement. A third forming plunger 12 is carried b and depends from the member 10. As, illustrated, the plungers 6, 7 and 12 are substantially in the same horizontal plane when idle and occupy the same horizontal plane when their work-.

ing strokes are finished although 'being adapted to assume difl'erent levels with respect to each other during their working strokes in accordance with my invention, as

will later more fully appear. Two links 13 and 14 are employed, link 13 being pivotall connected to the lever 8 between the end of said lever. The link 14 is pivotally connected with the lever 9 between the ends of this lever. I also desirably. employ two springs 15 and 16, spring 15 being in actuating connection with link 13 and spring 16 in actuating connection with link 14. Actuatin power is applied to the springs 15 and 16 and from these springs to the links and levers 8, 9, 13 and 14 which have been described and in order that this result may be effectively accomplished I desirably rest the lower ends of these springs upon shoulders 13 14 formed by reducing the upper ends of the links 13, 14. The upper ends of said springs are engaged by shoulders 17 18 formed by reducing the lower ends of the links 17 and 18. The links 17 and 13 are alined and the reduced ends thereof are surrounded by the spring 15, these reduced ends being in sliding relatlon. The links 18 and 14 are also alined and the reduced ends thereof which are in sliding relation are surrounded by the spring 16. The upper ends of the links 17 and 18 are respectively connected with the lovers 19 and 20 which are respectively in fixed relation with the amental gears. 21 and 22 that arein mesh with each other. 1 v

The lever is carried. below the link 18 I and terminates in an operating handle 23.

and 22. The springs 15 and'16 serve ieldingly to 'ap 1y actuating power to the overs 8 and 9 an the forming plungers 6, 7 and 12, in their downward movement or working strokes, are free to shift .their relative positions in performing their work, a result lable v a The particular type of press illustrated 1s atv which is'permitted owing to the connection of the levers 8 and 9 by the connecting member 10.

The forming plunger 12, beingupon the connecting member 10, there is afiorded a third. lunger whose position with respect to the @5181 plungers 1s automatically regu= one which is adapted to the formation of the front glasses of headlights such as are commonly seen in headlights of automobiles, one,

.such headlight glass beingl section at 24, Fig. 2. Int these headlight glasses there is employed a illustrated in e formation of mold box that includes'a mold board hav- Y ing rows of cavities 26 that conform to the shape and design of the headlight glasses I that are to be formed by the press. There placed in each of brought to shape.

being preferably three plungers in the'press, the cavities 26 are arranged in rows that extend transversely of the board 25, there being three cavities to a row. The cover 27 of the mold box has rows of openings 28 that are in registry with the cavities 26, such registry being assured by means of pins 29 depending from the cover 27 that are, receivable in the openings 30 in the board 25. Each row of cavities 26 and the openings 28 above the same are in alinement with the plungers 6, 7 and 12, there having been these cavities just about the quantity of molten glass that is required to make a headlight glass whereafter the handle 23-is depressed to cause the descent of the forming plungers. The masses of molten glass that are initially placed in the cavities are of dissimilar shape so that the plungers will initially have dissimilar engagement therewith but owing to the means set forth the plungers will automatically be shifted to adapt themselves to the masses of molten glass whereby the molten glass will be properly distributed in the various cavities, the plungers assuming the same level when their working stroke is finished, at which time the masses of molten glass are The pressure exerted upon plunger 12 is suitably proportionedwith respect to the-pressure exerted by each plunger 6, 7 by suitably locating the place naearee of connection eras links'l3 and a Warthe levers 8 and 9, it being thus possible to the press whereupon the top and bottom of the mold box may be separated to permit of the removal of the glasses. The means for feeding themold box step by step beneath the plungers may include an arm 31 moving with the segmental gear 21, the link 32 connected with the outer end or the arm 31, a rocker arm 33 movable upon the shaft 3%, the ratchet wheel 35 in fixed relation to the shaft 34, an actuating pawl 36 in actuat ing relation to the ratchet wheel 35 and pinionsBl fixed upon the shaft 34 and in mesh with racks 38 that are carried by and depend from the bottom 25 or the mold box.

0n each downward depression oi the handle 23, the pawl 36-is moved into engagement with a fresh tooth of the ratchet wheel 85 and upon each upward movement of the handle 23 the pawl 36 turns the ratchet wheel one step which is suficient to advance a fresh row of cavities 26 to a position beneath the plungers. The trailing dog 39 holds the ratchet wheel 35 from reverse rotation. The lever 20 and its handle 23 constitute means common to the plungers and the levers connected with the plungers for operating these plungers and levers to ether, this lever 20 performing its work d'rectly upon some of the parts and indi rectly upon other parts through the inter mediation of the gears 21 and 22. The springs 15, 16 not only serve as a medium through which power is transmitted to the plungers but also aid in ehecting upward withdrawing movement of the plungers.

While l have herein shown and particularly described thepreferred embodiment of my invention ll do not wish to be limited to the-precise details of construction shown as changes may readily be made without departing from the s irit of my invention, but having thus descri ed my invention ll claim as new and desire to secure by Letters'lPatout the 'following:-

1. A press including able plungers; with respect to gers; two levers for edecting operation of the aforesaid plungers, one connected with each of the first aforesaid lungers and both connected with the third p unger; and mech anism for eflecting plunger actuating operation of the levers.

each of the aforesaid plun- 2. A press including two plungers; a third plunger movable with respect to each of the aforesaid plungers; two levers for effecting operation of the aforesaid plungers, one connected with each of the first aforesaid plungers and both connected with the third plunger; and mechanism for effecting plunger actuating operation of the levers.

3. A press including two relatively movable plungers; a third plunger movable with respect to each of the aforesaid plungers; two levers for e'fiec'ting operation of the aforesaid plungers, one connected with each of the first aforesaid plungers and both connected with the third plunger; two operating levers for operating the aforesaid levers; two intermeshing gears, one connected with each of said operating levers; and

links connecting the first mentioned levers with. the last mentioned levers.

4. A press including two plungers; athird plunger-movable with respect to each of the aforesaid plungers; two levers for effecting operation of the aforesaid plungers, one connected with each of the first aforesaid plungers and both connected with the third plunger; two operating levers for operating the aforesaid levers; two intermeshing gears, one connected with each of said operating levers; and links connecting the first mentioned levers with the last mentioned levers.

In witness whereof, I hereunto subscribe my name this third day of December, A. D.,

EMIL G. JOHANSON. 

